⚡ 10-Second Rule
Courts give contract words their ordinary meaning, and the parties' own real-world behavior breaks ties.
🧒 ELI-10 Scene
Theo and June run a lemonade stand and agree to "split the money." June thinks that means split what's left after buying lemons. Theo thinks it means every dollar in the jar. How do you decide? Look at what they actually did this summer: they always paid for lemons first. Look at their older stands together: same habit. Then look at how other kid-stands on the block do it. What these two actually did together matters most.
⚖️ Actual Rule
Courts interpret contract language according to its plain, ordinary meaning unless the parties clearly used a special meaning. Under the traditional plain meaning rule, extrinsic evidence is admissible only if the writing is ambiguous on its face; the modern approach, reflected in Restatement (Second) of Contracts § 202 (paraphrased), reads words in light of all the circumstances, including the parties' negotiations and purposes. Under Restatement § 201 (paraphrased), if the parties attached different meanings to a term, the meaning of the party who neither knew nor had reason to know of the other's meaning controls; if neither knew of the other's meaning, there may be no agreement on that term at all. Restatement § 203 (paraphrased) supplies standards of preference: specific terms control general ones, and separately negotiated or handwritten terms control standardized boilerplate. Restatement § 206 (paraphrased) construes an ambiguity against the drafter — a last resort. For practical context, UCC § 1-303(e) fixes a strict hierarchy: express terms and trade context are construed as consistent with each other "whenever reasonable," but if that is unreasonable, "(1) express terms prevail over course of performance, course of dealing, and usage of trade; (2) course of performance prevails over course of dealing and usage of trade; and (3) course of dealing prevails over usage of trade." Course of performance is the parties' conduct under this contract; course of dealing is their conduct in previous contracts; usage of trade is the practice of the industry.
ELI-10 translation: read the words normally, then let what the parties actually did settle any fight.
[NJ-VARIANT: flagged for future Eli Explains NJ Law module]
🔍 Ask These Questions
- Is the term clear on its face? (Would an ordinary reader see just one meaning?)
- Did the parties mean different things, and did either side know it? (The innocent side's meaning beats the side that knew.)
- What do the express terms say? (The written words sit at the top of the ladder.)
- How did the parties perform this contract, and their past ones? (Their own actions are the next rungs down.)
- What does the industry do? (Trade custom sits on the bottom rung.)
- Do specific or handwritten terms compete with general or printed ones? (The words typed just for this deal count extra.)
- Still stuck? Construe against the drafter. (Last resort: the side that wrote the confusing words loses the tie.)
⚠️ Bar Trap
Exam language: Examiners scramble the UCC § 1-303 ladder — most often by offering usage of trade to override the parties' own course of performance — or push you to construe an ambiguity against the drafter before the ordinary interpretive tools are exhausted. Express terms beat course of performance; performance beats course of dealing; dealing beats usage of trade; contra proferentem comes last.
ELI-10: Climb the ladder in order. What the paper says beats what these parties did. What they did beats what the industry does. Blaming the writer comes only at the very end.
🧪 Question
A bakery signed a one-year contract, prepared on a flour mill's standard form, requiring the mill to deliver "300 sacks" of flour each month. The form did not define "sack." In the regional flour trade, a "sack" uniformly means a fifty-pound bag. For the first five months, the mill delivered forty-pound bags each month, and the bakery accepted the deliveries and paid every invoice without objection. In the sixth month, the bakery demanded fifty-pound bags and sued the mill for breach when it refused.
In deciding what "sack" means, which interpretive source should the court treat as controlling?
(A) The trade usage, because express terms must be read consistently with uniform industry standards. (B) The parties' course of performance, because repeated accepted deliveries rank above usage of trade. (C) The fifty-pound meaning, because ambiguities are construed against the mill as drafter of the form. (D) None, because the parties never agreed on the term's meaning, so the quantity term fails for indefiniteness.
Answer: (B). Under UCC § 1-303(e), the parties' course of performance — five months of forty-pound deliveries accepted without objection — prevails over usage of trade, and the undefined word "sack" supplies no contrary express term to top the ladder.
💡 Why the Wrong Answers Are Wrong
- (A) puts usage of trade above course of performance, inverting the § 1-303(e) hierarchy.
- (C) reaches for construction against the drafter, a last-resort rule, when the hierarchy already resolves the ambiguity.
- (D) declares failure too fast; the interpretation tools exist precisely so courts can give ambiguous terms content.
- ELI-10: The misconception is treating industry habit as king. The parties' own repeated behavior speaks louder than the industry's.
